US8769799B2

Self locking fasteners and methods relating to same

Summary by NHIP

Self-locking fastener with cam operator

The invention provides a self-locking fastener comprising an outer body, an inner body, and a rotatable cam operator. The cam operator moves between a first position allowing rotation and a second position exerting downward force to prevent the bodies from rotating relative to an adjacent surface.

Claim Score by NHIP

Read claim 8, the broadest

Abstract

A self locking fastener is disclosed herein which is self-contained and resists loosening even when used in applications and environments where the fastener is exposed to vibration. In one form the present invention provides a self locking screw-type fastener, methods of manufacturing and/or assembling such fasteners, and methods of fastening using such fasteners. In another form, the invention provides a self locking nut-type fastener, methods of manufacturing and/or assembling such fasteners, and methods of fastening using such fasteners. In still other forms, the invention provides components for creating self locking fasteners using at least in part conventional materials and/or fasteners, methods of manufacturing and/or assembling such fasteners, and methods of fastening using such fasteners. In another form, the invention provides prepackaged kits for customizable fasteners that purchasers can buy and use to assemble customized fasteners in accordance with the invention.

US8769799B2, drawing sheet 1
Sheet 1 of 11

Term

Projected expiry 17 August 2032.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Projected expiry

13 claims: 4 independent, 9 dependent

  1. 1
    A locking fastener comprising:an outer body defining an opening therein;an inner body disposed within the opening of the outer body and aligned coaxially with the outer body about a primary axis;and a cam operator inserted at least partially through a portion of the inner and outer bodies and connecting the inner and outer bodies to one another to form the locking fastener, the cam operator being rotatable about a secondary axis that is generally normal to the primary axis and movable between a first position wherein the inner and outer bodies are rotatable with respect to a surface or structure located adjacent or proximate to the inner and outer bodies and to which the fastener is being fastened, and a second position wherein the inner and outer bodies are not rotatable with respect to the adjacent or proximate surface or structure and the inner and outer bodies are fastened to the adjacent or proximate surface or structure;wherein the outer body defines at least one opening through which at least a portion of the cam operator is inserted;and the inner body defines a passage through which the at least a portion of the cam operator is inserted so that rotation of the cam operator between the first position and second position causes the cam operator to engage at least a portion of the inner body and exert a downward force on the outer body to prevent the inner and outer bodies from rotating with respect to the adjacent or proximate surface or structure to which the fastener is being fastened.
  2. 7
    A method of fastening a first and second article, the method comprising:providing a locking fastener having an outer body defining an opening therein, an inner body disposed within the opening of the outer body and aligned coaxially with the outer body about a primary axis, and a cam operator inserted at least partially through a portion of the inner and outer bodies and connecting the inner and outer bodies to one another to form the locking fastener, the cam operator being rotatable about a secondary axis that is generally normal to the primary axis and movable between a first position wherein the inner and outer bodies are rotatable with respect to a surface or structure located adjacent or proximate to the inner and outer bodies and to which the fastener is being fastened, and a second position wherein the inner and outer bodies are not rotatable with respect to the adjacent or proximate surface or structure and the inner and outer bodies are fastened to the adjacent or proximate surface or structure;and fastening the first and second articles to one another by securing the fastener to the first and second articles so that the inner body is positioned proximate to one of the articles and then rotating the cam operator from the first position to the second position so that the outer body is pressed against one of the first and second articles and the first and second articles are fastened together.
  3. 8
    Broadest claimClaim Score 46, average(NHIP)A method for fastening a nut or collar type fastener, comprising:providing a cup defining an opening therein, a sleeve disposed within the opening of the cup and aligned coaxially with the cup about a primary axis, the sleeve defining a bore that is at least partially internally threaded and a passage and, and a cam operator inserted at least partially through a portion of the cup and the passage of the sleeve such that the cam operator connects the cup and sleeve to one another to form a nut or collar type fastener, the cam operator being rotatable about a secondary axis that is generally normal to the primary axis and movable between a first position wherein the cup and sleeve are rotatable with respect to a first and second article to which the nut or collar type fastener is being fastened, and a second position wherein the cup and sleeve are not rotatable with respect to the first and second article and secure the first and second article to one another;and fastening the cup and sleeve to one another by moving the cam operator from the first position to the second position so that a clamping force is applied to the cup and sleeve to prevent the cup and sleeve from moving with respect to the first and second article.
  4. 9
    A locking fastener comprising:an outer body defining an opening therein;an inner body disposed within the opening of the outer body and aligned coaxially with the outer body about a primary axis;a cam operator inserted at least partially through a portion of the inner and outer bodies and connecting the inner and outer bodies to one another to form the locking fastener, the cam operator being rotatable about a secondary axis that is generally normal to the primary axis and movable between a first position wherein the inner and outer bodies are rotatable with respect to a surface or structure located adjacent or proximate to the inner and outer bodies and to which the fastener is being fastened, and a second position wherein the inner and outer bodies are not rotatable with respect to the adjacent or proximate surface or structure and the inner and outer bodies are fastened to the adjacent or proximate surface or structure;and an outer sleeve defining a first opening within which at least a portion of the outer body or inner body are disposed and having a first longitudinal axis that is coaxial with respect to a longitudinal axis of either the outer body or inner body, and further defining a second opening having a longitudinal axis that is transverse to and tangential to the first longitudinal axis of the outer sleeve within which at least a portion of the cam operator is disposed.